Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Danish
køpæ
→
Danish
købe
(inherited)
→
Norwegian Bokmål
kjøpe
(derived)
→
Norwegian Bokmål
kjøp
(derived)
→
Norwegian Bokmål
ab-kjøp
(derived)